Question

1. In the arithmetic sequence given below, some terms are missing and their positions are marked with . Find them 19, 28, , · · · (2marks) 2. Write down a sequence obtained by starting with 2 and adding 3 repeatedly. Is it an arithmetic sequence. Why? (3marks) 3. Write down the sequence of natural numbers leaving remainder 1 on division by 5 and the sequence of natural numbers leaving remainder 2 on division by 5. Find the algebraic expression of both sequences. (4marks) 4. Write down a number sequence by adding 2 to the multiples of 4. Is it an arithmetic sequence. Why? Find its 20th term ? (5marks) 5. The algebraic expression of some sequences are given below. Check whether each of them is an arithmetic sequence. Give reasons. Also for the arithmetic sequence, write the common difference also. (i) xn = 5n + 1 (ii) xn = 2n 2 + 3n − 1​

Answer 1

sorry mene bhi jahi question putchna hai mughe bhi nahi aata plese help me